Njira zoyang'anira misewu nthawi zambiri zimagawidwa kukhala zotchingira zosinthika, zotchingira zolimba pang'ono ndi zolondera zolimba. Flexible guardrails nthawi zambiri amatanthawuza zotchingira chingwe, zotchingira zolimba nthawi zambiri zimatanthawuza zotchingira za simenti, ndipo zotchingira zolimba nthawi zambiri zimatanthawuza zotchingira zamitengo. Beam fence guardrail ndi mawonekedwe amtengo omwe amakhazikika ndi zipilala, kudalira kupindika komanso kugwedezeka kwachitetezo kuti zisagundane ndi magalimoto. Mitengo yotchinga imakhala ndi kukhazikika komanso kulimba kwina, ndipo imatenga mphamvu zogundana kudzera pakusinthika kwa mtanda. Ziwalo zake zowonongeka ndizosavuta kusintha, zimakhala ndi zowoneka bwino, zimatha kugwirizanitsidwa ndi mawonekedwe a msewu, ndikukhala ndi maonekedwe okongola. Pakati pawo, corrugated beam guardrail ndi yomwe imagwiritsidwa ntchito kwambiri kunyumba ndi kunja m'zaka zaposachedwa. Kwa osiyanasiyana.
1. Mfundo zokhazikitsira zotchingira m’mbali mwa msewu
Njira zoyang'anira m'mphepete mwa msewu zimagawidwa m'mitundu iwiri: zotchingira zotchingira ndi zotchinga. Kutalika kocheperako kwa msewu ndi 70 metres. Pamene mtunda pakati pa zigawo ziwiri za guardrails ndi zosakwana mamita 100, izo m'pofunika kuziika mosalekeza pakati pa zigawo ziwirizo. Mpanda wa guardrail umakhala pakati pa magawo awiri odzaza. Gawo lakukumba lokhala ndi utali wochepera 100 metres liyenera kukhala lopitilira ndi zotchingira za magawo odzaza mbali zonse ziwiri. Pamapangidwe achitetezo a m'mphepete mwa msewu, zotchingira zimayenera kukhazikitsidwa ngati izi zakwaniritsidwa:
A. Magawo omwe njira yotsetsereka i ndi kutalika kwa mpanda h zili mkati mwa mthunzi wa Chithunzi 1.
B. Magawo odutsa njanji ndi misewu yayikulu, pomwe magalimoto ali ndi Magawo pomwe galimoto imatha kugwera panjanji kapena misewu ina.
C. Magawo omwe pali mitsinje, nyanja, nyanja, madambo ndi madzi ena mkati mwa 1.0 metres kuchokera pansi pa msewu panjira zamagalimoto kapena misewu yapamwamba kwambiri yamagalimoto, komanso komwe magalimoto angakhale owopsa kwambiri akagwera mmenemo.
D. Dera lamakona atatu lolowera ndi kutuluka panjira zodutsamo ndi kunja kwa mapindikidwe ang'onoang'ono a ma radius.
2. Malo oteteza misewu akhazikike pazifukwa izi:
A. Magawo omwe njira yotsetsereka i ndi kutalika kwa mpanda h zili pamwamba pa mzere wa madontho mu Chithunzi 1.
B. Zigawo kumene msewu otsetsereka i ndi mpanda kutalika H ali mkati 1.0 mamita kuchokera m'mphepete mwa dziko phewa pa Expressways kapena kalasi yoyamba misewu magalimoto Shanghai epoxy pansi, pamene pali nyumba monga gantry nyumba, matelefoni mwadzidzidzi, piers kapena abutments wa overpasses.
C. Kufanana ndi njanji ndi misewu ikuluikulu, kumene magalimoto amatha kuswa njanji zoyandikana kapena misewu ina yayikulu.
D. Pang'onopang'ono magawo kumene m'lifupi mwa msewu bedi kusintha.
E. Magawo omwe utali wopindika ndi wocheperako kuposa utali wocheperako.
F. Magawo osinthira liwiro pamalo ochitira ntchito, malo oimika magalimoto kapena malo okwerera mabasi, ndi magawo omwe ali m'magawo atatu omwe mipanda ndi zotchingira zimagawanitsa ndikuphatikiza magalimoto.
G. Kulumikizana pakati pa malekezero a milatho ikuluikulu, yapakati ndi yaing'ono kapena malekezero a nyumba zokwezeka ndi misewu.
H. Kumene kumaonedwa kuti n'koyenera kukhazikitsa zoteteza pazilumba zopatukana ndi zilumba zopatukana.
Nthawi yotumiza: Aug-12-2024